It was an eventful week in the world of closers, and there are more stories to discuss than space allows. Here are the most interesting ones:

Kansas City Royals: Last week we identified Greg Holland as a candidate to lose his job. He has not officially lost it but Kelvin Herrera has garnered a share of the job, at least in the short term.

Herrera is not that far away from Aroldis Chapman and Craig Kimbrel territory. He has everything you want from a closer: good control, a big fastball and a high strikeout rate. If he pushes Holland out of the role it is probably for good.

Holland, though, will not give up without a fight. He was a hot commodity who most analysts thought could get the job done, and for the most part he has. Though the Closer Identifier Algorithm was never a big fan, Holland routinely rated a "hold" status. For now though, he gets a "lose" status, and it is just his bad luck that he had trouble to start the season.

As far as rating his status, see the description below. Sometimes there is no official statement; the closer simply never gets another save. In that case, we go back to his last appearance following his last save and assume that is when he lost his share of the job.

St. Louis Cardinals: Mitchell Boggs was never a good fit for the role, and was a solid "lose" candidate. Though it has not become official, the team is openly discussing other options -- from Trevor Rosenthal to Edward Mujica. Boggs pitched in a mop-up role Monday night against the Pirates and still let up a hit and a walk. It is probably safe to say he is done as the closer, but, as mentioned above, unless there is an announcement, we will go back to yesterday's outing for Boggs, which will result in a "hit" for CIA.

The latest CIA results include Rosenthal with a "hold" status, but not Mujica. Mujica is one of the best unknown relievers and, like Sergio Romo, always puts up superlative numbers while toiling in relative obscurity. Mujica not only gets a solid "hold" he might be a top-10 closer if given the chance.

Boston Red Sox: Joel Hanrahan admits he was pitching with a hamstring injury while getting shellacked. Yeah right. Hanrahan had a big skills drop last year and it has carried over into 2013, only in a much tougher division and in a more stressful market. Throw in the fact that Andrew Bailey has a history of success and the fact that the Sox have four relievers who are better than Hanrahan, and it is not a stretch to put the chances that he loses the job at 75%.

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You can find the complete set of results here. The current version of the Algorithm:

The current version of CIA:

1. Does the pitcher have a share of the closer's job?

2. If so, is his save percentage greater than 90% with 10 or more opportunities, or in his last ten opportunities? If "yes" then "hold." If "no" proceed to step 3.

3. Is the pitcher's save percentage less than or equal to 60% over his last 10 opportunities? If "yes" then "lose." If "no" proceed to step 4.

4. Is his strikeout rate (K/9) above 7.0?

5. Is his strikeout-to-walk (K/BB) rate above 2.5?

6. Is his BaseballHQ BPV above 80?

If the answer to conditions 4-6 is yes, then CIA predicts he'll keep the job. If the answer is no to any one of the conditions, it predicts he'll lose the job. The prediction will be deemed correct or not at the time of an official announcement or when the pitcher has lost a share of the job, in which case we go back to the appearance directly after his last save.